It has a lot more harsh vibration in it, so it’s going to provide more of a challenge for Mercalli. The second clip, as you can see in the preview, is essentially more of the same, but it’s got a different quality to it. That effect comes from the shutter speed of the GoPro. Mercalli calls it the rolling shutter skew, but in the clip you can see every once in a while that some of his frame, his legs, and the tires deform in an unnatural way.

You’ll also notice that, as another rider comes into the frame, you get a little bit of the familiar, Jell-O rolling shutter effect. Plus, the rocking back and forth from his peddling makes a big difference too.įigure 5. You can see in the clip that the road vibration is transferring all the way up into the lens, making it pretty bouncy. The first one is not too bad, because he's not going too quickly. You can see me preview the footage at the 1:44 mark in the tutorial video. He gave me some really terrible bouncy footage to play with. The top two clips shown in Figure 5 (below) are some POV cycling footage I got from a good friend of mine, Rob Gillen, who went on a ride a couple of years back with some friends and a GoPro.

Mercalli premiere